The denominator included the Medicare population age 65-99 on January 1, 2012 that was eligible for Medicare Parts A and B. Patients enrolled in risk-bearing HMOs at any time during the year were excluded.

NUMERATOR DEFINITION:

The occurrence of an annual wellness visit was indicated by the presence of a claim with HCPCS codes G0438 or G0439 in the Carrier file.

The Dartmouth Atlas of Health Care is based at The Dartmouth Institute for Health
Policy and Clinical Practice and is supported by a coalition of funders led by the Robert Wood Johnson Foundation,
including the WellPoint Foundation, the United Health Foundation, the California HealthCare Foundation, and the Charles H. Hood Foundation.